reload_schema_from_cache

# File activerecord/lib/active_record/model_schema.rb, line 366
      def reload_schema_from_cache
        @arel_engine = nil
        @arel_table = nil
        @column_names = nil
        @attribute_types = nil
        @content_columns = nil
        @default_attributes = nil
        @inheritance_column = nil unless defined?(@explicit_inheritance_column) && @explicit_inheritance_column
        @attributes_builder = nil
        @columns = nil
        @columns_hash = nil
        @attribute_names = nil
        direct_descendants.each do |descendant|
          descendant.send(:reload_schema_from_cache)
        end
      end